Some seriously state that they're surrounded by idiots. Some, funnily enough, state this more often than others. And certainly we could find many different types of problem to get along.
The author Thomas Erikson describes one of the worlds most used methods to sort out the differences in human communication. It is a method coming from the famous DISA profiles, that use a color scheme of red, yellow, green and blue as a base to describe different behaviour and personalities.
It is written with lots of humor and gives the reader a steady guidance which makes the book very practical. The focus is on usability and the methods described works every time you meet another person.